School Children and Sleep  A recent study of 200,000 school age children in San Diego examined the effect of bussing of the children on their achievement scores. In San Diego, there are not enough buses, so the children are brought to school in three shifts, 1 hour apart. The first group comes to school two hours earlier than the last group. When their Stanford Achievement scores were compared, the group that went to school later had significantly better scores. Studies have found that the mood of children is improved when they can go to school later. It probably doesn't make much sense, when high school students are awake late naturally, because of their biological clock, to make them get up very early and force them to accumulate a sleep debt.
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